EP0578318A1 - Verfahren zur Herstellung von Pentaerythritol-Abkommenden Phosphor-Heteroringen - Google Patents
Verfahren zur Herstellung von Pentaerythritol-Abkommenden Phosphor-Heteroringen Download PDFInfo
- Publication number
- EP0578318A1 EP0578318A1 EP93201954A EP93201954A EP0578318A1 EP 0578318 A1 EP0578318 A1 EP 0578318A1 EP 93201954 A EP93201954 A EP 93201954A EP 93201954 A EP93201954 A EP 93201954A EP 0578318 A1 EP0578318 A1 EP 0578318A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pentaerythritol
- phosphorus
- formation
- process according
- trivalent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 31
- 239000011574 phosphorus Substances 0.000 title claims abstract description 31
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 7
- -1 pentaerythritol polyol Chemical class 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 19
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 8
- 239000010452 phosphate Substances 0.000 claims abstract description 7
- 229920005862 polyol Polymers 0.000 claims abstract description 7
- 150000008301 phosphite esters Chemical class 0.000 claims description 4
- 150000003018 phosphorus compounds Chemical class 0.000 abstract description 3
- 229940059574 pentaerithrityl Drugs 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 7
- 235000021317 phosphate Nutrition 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- YASRHLDAFCMIPB-UHFFFAOYSA-N (1-oxo-2,6,7-trioxa-1$l^{5}-phosphabicyclo[2.2.2]octan-4-yl)methanol Chemical compound C1OP2(=O)OCC1(CO)CO2 YASRHLDAFCMIPB-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- OHRVBDRGLIWLPA-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] dihydrogen phosphate Chemical group OCC(CO)(CO)COP(O)(O)=O OHRVBDRGLIWLPA-UHFFFAOYSA-N 0.000 description 2
- VMNKHSPZIGIPLL-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] dihydrogen phosphite Chemical compound OCC(CO)(CO)COP(O)O VMNKHSPZIGIPLL-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 2
- OWICEWMBIBPFAH-UHFFFAOYSA-N (3-diphenoxyphosphoryloxyphenyl) diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1)(=O)OC1=CC=CC=C1 OWICEWMBIBPFAH-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UUGLJVMIFJNVFH-UHFFFAOYSA-N Hexyl benzoate Chemical compound CCCCCCOC(=O)C1=CC=CC=C1 UUGLJVMIFJNVFH-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 238000010936 aqueous wash Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000001177 diphosphate Substances 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- CBOIHMRHGLHBPB-UHFFFAOYSA-N hydroxymethyl Chemical compound O[CH2] CBOIHMRHGLHBPB-UHFFFAOYSA-N 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Substances OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- KPGXUAIFQMJJFB-UHFFFAOYSA-H tungsten hexachloride Chemical compound Cl[W](Cl)(Cl)(Cl)(Cl)Cl KPGXUAIFQMJJFB-UHFFFAOYSA-H 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
- C07F9/6574—Esters of oxyacids of phosphorus
- C07F9/65746—Esters of oxyacids of phosphorus the molecule containing more than one cyclic phosphorus atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
- C07F9/6574—Esters of oxyacids of phosphorus
- C07F9/65748—Esters of oxyacids of phosphorus the cyclic phosphorus atom belonging to more than one ring system
Definitions
- solvents which are described in this patent include dioxane, the preferred solvent, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, chlorobenzene, toluene, xylene, acetonitrile, sulfolane, and tetrachloroethylene.
- the solvents are indicated as being ones which should have a boiling point of at least 75°C, preferably in the range of 75°C to about 125°C.
- the present invention relates to a novel proces2 for the formation of pentaerythritol-based phosphorus heterocycles which comprises the reaction of a pentaerythritol polyol with either a trivalent or pentavalent phosphorus compound using an aryl phosphate solvent at elevated temperature.
- the present invention is directed to a process for the formation of pentaerythritol-based phosphorus heterocycles which uses as one essential reagent a pentaerythritol polyol which can be selected from pentaerythritol itself, dipenta erythritol, tripentaerythritol, or mixtures of any of these three types of polyols.
- pentaerythritol based as used herein is meant to encompass compounds containing the structural unit -C(CH2OH) 3 which is contained in either pentaerythritol or its dimeric or trimeric derivatives, dipentaerythritol and tripentaerythritol.
- trivalent or pentavalent phosphorus compound which is to be selected for use in the present invention would depend upon the type of phosphorus containing heterocycle desired.
- the phosphorus compound can be selected from trivalent or pentavalent phosphorus compounds with representative trivalent phosphorus compounds being phosphorus trihalides or organophosphites (e.g., triphenyl phosphite).
- Representative pentavalent phosphorus reagents for use in the present process include the phosphorus oxytrihalides such as phosphorus oxytrichloride.
- the novel solvent employed in the present invention is, prefera-bly, a neutral ester of a phosphorus acid in the +5 oxidation state which is stable (free of acid generation) at the selected reaction temperature.
- an aryl phosphate solvent which has a relatively high boiling point, e.g., from about 400°C to about 500°C, such as triphenyl phosphate, cresyl diphenyl phosphate, tricresyl phosphate, isopropylphenyl diphenyl phosphate, t-butylphenyl diphenyl phosphate, and tetraphenyl resorcinol diphosphate.
- aryl phosphate solvent which has a relatively high boiling point, e.g., from about 400°C to about 500°C, such as triphenyl phosphate, cresyl diphenyl phosphate, tricresyl phosphate, isopropylphenyl diphenyl phosphate, t-butylphenyl diphenyl phosphate, and tetraphenyl resorcinol diphosphate.
- the solvent used in the present invention is a flame retardant in its own right and, to the extent that it is present as a contaminant in the flame retardant product, it is unlikely to be a problem when the product is used.
- the phosphate solvent is moderately polar to promote the solubility of the reacting species.
- the very high boiling points and good thermal stability of the phosphates allow for distillation of rather high boiling reaction by-products, such as phenol, without contamination from the solvent.
- the general water insolubility of the phosphate solvents used in the present invention allows for aqueous wash, if necessary, for purification of the solvent by dissolving water-soluble species (including acid or base-soluble species).
- the recyclability of the phosphate solvent is enhanced.
- the resulting white slurry was heated to 100 C with a nitrogen gas sparge for eight hours to remove HCl.
- the mixture was cooled to 50°C and filtered.
- the solid was washed three times with 40 mL of hexane and dried at 100°C/2 mm Hg for sixteen hours to give 42.3 g (71.2% yield) of crude pentaerythritol phosphate alcohol (2,6,7-trioxa-1 phosphabicyclo[2.2.2]octane-4-methanol-1-oxide).
- the product had a 31p NMR resonance at -6.0 ppm in d6-DMSO.
- the resulting, nearly colorless solution contained the pentaerythritol phosphite alcohol, 2,6,7-trioxa-1-phosphabicy-clot2.2.2]octane-4-methanol in about 92% purity, by 31p NMR (95.2 ppm in d6-DMSO).
- Example 2 In a 250 ml four-necked flask fitted as in Example 1 were placed 40.8 g (0.30 mole) of pentaerythritol, 60 mg (0.63 mmole) of anhydrous magnesium dichloride, and 50 mL of the PHOSFLEX 41P brand material under nitrogen. The mixture was stirred and heated to 45-50°C during the one and one-half hour dropwise addition of 65.3 ml (103 g, 0.75 mole) of phosphorus trichloride. The temperature was increased to 95 C over the next hour and held there for five hours during a nitrogen sparge to remove HCl .
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US911868 | 1992-07-10 | ||
| US07/911,868 US5237085A (en) | 1992-07-10 | 1992-07-10 | Process for the formation of pentaerythritol-based phosphorous heterocycles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0578318A1 true EP0578318A1 (de) | 1994-01-12 |
Family
ID=25431014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93201954A Withdrawn EP0578318A1 (de) | 1992-07-10 | 1993-07-05 | Verfahren zur Herstellung von Pentaerythritol-Abkommenden Phosphor-Heteroringen |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5237085A (de) |
| EP (1) | EP0578318A1 (de) |
| JP (1) | JPH06157567A (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666266A1 (de) * | 1994-02-08 | 1995-08-09 | Hoechst Aktiengesellschaft | Verfahren zur Herstellung von Trismethylolalkanphosphit |
| WO2003002581A1 (en) * | 2001-06-29 | 2003-01-09 | Pabu Services, Inc. | Process for the production of pentaerythritol phosphate alcohol |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362898A (en) * | 1993-11-22 | 1994-11-08 | Akzo Nobel Nv | Bis(pentaerythritol phosphate alcohol) alkylphosphonate |
| US5633301A (en) * | 1996-05-23 | 1997-05-27 | Akzo Nobel Nv | Flame retardant polyketone composition |
| DE60023348T2 (de) | 1999-08-06 | 2006-07-06 | Pabu Services, Inc., Wilmington | Intumeszenz-polymerzusammensetzung |
| US6833467B2 (en) * | 2002-11-12 | 2004-12-21 | Chung-Shan Institute Of Science & Technology | Method for preparing pentaerythritol phosphate alcohol by mechanochemical synthesis |
| CN102020677A (zh) * | 2010-11-24 | 2011-04-20 | 上海华谊（集团）公司 | 一种季戊四醇磷酸酯的制备方法 |
| CN114478633A (zh) * | 2022-02-25 | 2022-05-13 | 青岛长荣化工科技有限公司 | 一种季戊四醇磷酸酯pepa的制备方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454064A (en) * | 1982-10-29 | 1984-06-12 | Borg-Warner Corporation | Process for preparing pentaerythritol phosphate |
-
1992
- 1992-07-10 US US07/911,868 patent/US5237085A/en not_active Expired - Lifetime
-
1993
- 1993-07-05 EP EP93201954A patent/EP0578318A1/de not_active Withdrawn
- 1993-07-12 JP JP5195150A patent/JPH06157567A/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454064A (en) * | 1982-10-29 | 1984-06-12 | Borg-Warner Corporation | Process for preparing pentaerythritol phosphate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666266A1 (de) * | 1994-02-08 | 1995-08-09 | Hoechst Aktiengesellschaft | Verfahren zur Herstellung von Trismethylolalkanphosphit |
| WO2003002581A1 (en) * | 2001-06-29 | 2003-01-09 | Pabu Services, Inc. | Process for the production of pentaerythritol phosphate alcohol |
Also Published As
| Publication number | Publication date |
|---|---|
| US5237085A (en) | 1993-08-17 |
| JPH06157567A (ja) | 1994-06-03 |
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| 18W | Application withdrawn |
Withdrawal date: 19970324 |